[Samba] Samba does not work after upgrade to Ubuntu 20.04.1

[Andrew Bartlett]

On Sun, 2020-10-18 at 21:16 +0200, Joachim Lindenberg via samba wrote:
> Hello,
> 
> today I upgraded one of my DCs to Ubuntu to 20.04.1. After that my DC
> did not work anymore, despite unmasking, reenabling.
> 
> In /var/log/samba/log.samba I get the error messages below. Looks
> like libraries are missing.
> 
> What shall I do?

As well as the incomplete upgrade as noted by Rowland, it looks like
another DNS server is blocking port 53.

Andrew Bartlett

-- 
Andrew Bartlett
https://samba.org/~abartlet/
Authentication Developer, Samba Team         https://samba.org
Samba Development and Support, Catalyst IT - Expert Open Source
Solutions
https://catalyst.net.nz/services/samba